if your not really having a problem, u can actually pull your injector rail -- 2 10 mm bolts, 1 quick disconnect and 2 wiring connectors, then remove rail, remove injectors and manually clean them using a can of throttle body cleaner, (in the inlet side) (they have a cone) its a cone shaped screen to catch contaminates, just spray out real good and look with light to verify nice and clean, then spray out injector rail, re-assemble spraying o rings slightly with silicon, -- your injectors inside should be ok, they are not built like early type injectors like in the eighty's, if u do it, run fuel tank low on fuel, clean em, fill it up and add bout 1/2 bottle of some type of cleaner, seafoam is ok.whole job takes less than 1 hr
http://www.seafoamsales.com/motor-treatment.html
mine are bosch injectors, they are pintle style injectors, dont really clog up that much and idle better, yours should be bosch also, lucas injectors are disc type, good also but more prone to needing serviced sometime most critical thing is moisture ruining injectors though, and olifin in fuels is a waxing agent that some additive will take care of --- but just use additive sometimes, maybe every 6-7 tanks of fuel -
